Thank u for help pls help again major test

Pls if a cow has a mass of 9×10^2 kilograms, and a blue whale has a mass of 1.8×10^5 kilograms, which of these statements is true?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

41/17 as a decimal rounded to the nearest hundredth